
Passive and Active Transport
Flashcard
•
Biology
•
6th - 9th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is Passive Transport?
Back
Passive transport is the movement of molecules across a cell membrane without the use of energy. It occurs naturally and includes processes like diffusion and osmosis.
2.
FLASHCARD QUESTION
Front
What is Active Transport?
Back
Active transport is the movement of molecules across a cell membrane using energy, usually in the form of ATP. It allows cells to move substances against their concentration gradient.
3.
FLASHCARD QUESTION
Front
Define Diffusion.
Back
Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until they reach equilibrium.
4.
FLASHCARD QUESTION
Front
What is Equilibrium in the context of diffusion?
Back
Equilibrium is the state reached when the concentration of molecules is equal on both sides of a membrane, resulting in no net movement of molecules.
5.
FLASHCARD QUESTION
Front
What is Osmosis?
Back
Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.
6.
FLASHCARD QUESTION
Front
What is a Selectively Permeable Membrane?
Back
A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others, crucial for maintaining homeostasis in cells.
7.
FLASHCARD QUESTION
Front
What is the difference between Active and Passive Transport?
Back
Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.
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